Describes a science activity in which sixth-grade students, using tookpicks and spherical breakfast cereals to construct molecular models, discovered that compounds with the same molecular formulas can have different structural formulas and therefore different physical properties (isomerism). (JR)

Activities designed to teach children about solar distance and size are presented. These include a classroom-sized model, an outdoor model, a read-aloud activity, and follow-up activities. Available resource materials in print and on film are listed. (CW)

Provides background information on landfills and describes an activity where students learn how a modern landfill is constructed and develop an understanding of the reasons for several regulations regarding modern landfill construction. Students design and construct working models of three types of landfills. (PR)

Describes interdisciplinary activities for teaching elementary science using eggs. Each activity is designed to introduce larger thematic units. Activities include making egg animals (study of animal survival), throwing raw eggs at taut vertical sheets and making cars for egg passengers (force and momentum), and making eggshell domes (dome…